000 00287nam a2200121Ia 4500
008 170912s9999 xx 000 0 und d
082 _a516.24 HAL/E HAL/E
100 _aHALL H S
245 0 _aELEMENTARY TRIGNOMETRY
260 _bDefault Publisher
_c1920
300 _a372
942 _cTB
999 _c24144
_d24144